Home / 13,168.25-18,172.19-7,199.96

Finding the Fourth Proportional to 13,168.25, 18,172.19 and 7,199.96

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Solution

The fourth proportional to 13,168.25, 18,172.19 and 7,199.96 is: 9,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.25 : 18,172.19 = 7,199.96 : x
  2. Step 2: Convert to fraction form
    13,168.25/18,172.19 = 7,199.96/x
  3. Step 3: Cross multiply
    13,168.25x = 18,172.19 × 7,199.96
  4. Step 4: Simplify right side
    13,168.25x = 130,839,041.11
  5. Step 5: Solve for x
    x = 130,839,041.11/13,168.25
  6. Step 6: Final answer
    x = 9,935.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.